DFI CR908-B - Manual (Page 37)

www.dfi .com Chapter 4 BIOS Setup
37
Chapter 4
PCI Express Configuration
Enable or Disable PCI
Express Clock Gating for
each root port.
Aptio Setup Utility - Copyright (C) 2011 American Megatrends, Inc.
Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc.
PCI Express Confi guration
PCI Express Clock Gating
 PCI Express Root Port 1
 PCI Express Root Port 5
 PCI Express Root Port 6
 PCI Express Root Port 7
PCIE Port 8 is assigned to LAN
[Enabled]
Chipset
 Select Screen
 Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous
Values
F3: Optimized Defaults
ESC: Exit
PCI Express Clock Gating
Enables or disables PCI Express Clock Gating for each root port.
PCI Express Root Port 1, port 5 to PCI Express Root Port 7
Controls the PCI Express Root Port.
USB Configuration
Enable or Disable XHCI
Pre-Boot Driver support.
Aptio Setup Utility - Copyright (C) 2011 American Megatrends, Inc.
Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc.
USB Confi guration
XHCI Pre-Boot Driver
XHCI Mode
HS Port #1 Switchable
HS Port #2 Switchable
HS Port #3 Switchable
HS Port #4 Switchable
xHCI Streams
EHCI1
EHCI2
[Enable]
[Smart Auto]
[Enabled]
[Enabled]
[Enabled]
[Enabled]
[Enabled]
[Enabled]
[Enabled]
Chipset
 Select Screen
 Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous
Values
F3: Optimized Defaults
ESC: Exit
xHCI Mode
Mode of operation of xHCI controller. Options are Smart Auto, Auto, Enabled,
Disabled.
EHCI1 and EHCI2
These fields are used to enable or disable USB 2.0 .